* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background: linear-gradient(180deg, #1a1a2e 0%, #16213e 100%);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    overflow: hidden;
}

.back-link {
    position: fixed;
    top: 10px;
    left: 10px;
    color: #00d4ff;
    text-decoration: none;
    font-size: 0.9rem;
    z-index: 100;
    padding: 5px 12px;
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 15px;
    transition: all 0.2s;
}

.back-link:hover {
    background: rgba(0, 212, 255, 0.1);
    border-color: #00d4ff;
}

#game-container {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 0 40px rgba(100, 0, 255, 0.3);
}

#gameCanvas {
    display: block;
    cursor: pointer;
}